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Finding the Fourth Proportional to 58,716, 81,028.08 and 32,220

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Solution

The fourth proportional to 58,716, 81,028.08 and 32,220 is: 44,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,716 : 81,028.08 = 32,220 : x
  2. Step 2: Convert to fraction form
    58,716/81,028.08 = 32,220/x
  3. Step 3: Cross multiply
    58,716x = 81,028.08 × 32,220
  4. Step 4: Simplify right side
    58,716x = 2,610,724,737.60
  5. Step 5: Solve for x
    x = 2,610,724,737.60/58,716
  6. Step 6: Final answer
    x = 44,463.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.